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Wiring protection – Rockwell Automation 1760-xxxx Pico Controller User Manual User Manual

Page 35

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Publication 1760-UM001D-EN-P - September 2005

Installation 2-11

1760-IB12XOB8 Expansion Module

1760-L12DWD

The dc controllers are protected against polarity reversal. To ensure
that the unit works correctly, ensure that the polarity of each terminal
is correct.

Wiring Protection

Both AC and DC versions require wiring protection (F1) rated for at
least 1 A (slow).

When the unit is powered on for the first time, the power supply
circuit draws a larger surge current than usual. Use an appropriate
device for switching on the incoming power and do not use any reed
relay contacts or proximity switches.

NC

NC

R2

R3

R4

R5

R6

R7

R8

R1

R9 R10 R11 R12 +24V

24V dc

Inputs x 24V dc

COM

0V dc

+24V dc

F1

12V dc

+12 V COM

I2

I3

I4

I5

I6

I7

I8

I1

Inputs x 12V dc

0V

F1

+12V dc